Improved sugar-evaporator



H. BUTLER.

Evaporatng Pan.

Patented Nov. 1, 1864.

humm' Inventor:

AM. PHOTO-LITHU-l-QNN- (DSBURNS PROCESS-/ UNITED STATES PATENT EEcE.

HARLOV BUTLER, OF CHESTERFIELD, OHIO.

IMPROVED SUGAR-EVAPORATOR.

Specification forming part of' Letters Patent No. 44,850, dated November l, 1864.

To all whom, t may concern.-

Be it known that I, HARLow BUTLER, of Chesterfield, in the county of Fulton and State of Ohio, have invented a new and useful Improvement in Sugar-Boilers; and I do hereby declare that the following is afull and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

In the manufacture of sugar and sirup it is difficult and laborious to separate the scum and other impurities from the cane-juice.

The main object of' my invention is to overcome these difficulties, and especially in the manufacture of' sirup and sugar from sorghum, which is now attracting great attention.

My invention consists in the use of a tall vessel for receiving the heated juice and separating the scum and sediment, and in a peculiar combination with such receiver.

In the accompanying drawings, Figurelis a top View of my sugar-boiler, the cover being thrown open. Fig. 2 is a side view or eleva# tion of the same.

The boiler or box A may be made with double bottom, leaving a space, B, Fig. 2, for the introduction of steam. It is dividedinto three chambers, C D E, there being also a dead-shelf1 or scum and precipitate separator, F, at one side, as seen in Fig. 1. In the chamber C isa coiled tube or worm, H, which,when the boiler is in operation, is mostly immersed in boiling sirup. The juice coming from the mill is introduced into this worm at h, Fig. 2, andiiows out of the worm at h', Fig. 2. The heat of the worm coagulates the albumen of the juice, Y

lines, in the sides of chambers O and D. This overflow may be drawn off by the faucet O, and after filtration the sirup or juice returned to the boiler. Before drawing off the contents of chamber F the openings L and M should be closed by the slide N. The juice fiows from chamber O into chamber D through opening in the bottom of the partition l?, so that these two chambers act together, the scum iiowing from both into the scum-separator F. Vheu the scum is removed and the juice sufficienti y concentrated, the latter is brought into the finisher E by raising the slide R, and thus opening passages in partition between chant bers D and E. In the finisher E the heat is continued until the sirup is finished or .ready to cool for the crystallization of sugar. Then the evaporation is com pleted, the sirup is drawn off by means of faucet T, the operation being facilitated by means ot' the sliding partition or scraper S.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

l. The use of the clarifying-receiver I, or a tall narrow vessel for receiving and clarifying the already-heated juice, the scum rising and iiowing off by a spout,'while t-he precipitate falls below the insertion of the discharge-pipe for the thus clarified juice, substantially in the manner and for the purposes set forth.

2. The combination and arrangement of the worm H, the receiver I, with discharge-tube K, and the evaporatiiig-chamber O, substantially as specified.

I-IARLOV BUTLER.

Witnessesz J. It. WETTZEL, DANIEL SUHLLOTTNER. 

